| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat dissipation member or the like which has a multilayer structure consisting of a ceramic member and a heatsink and can prevent a screwed portion from breaking against the tightening of an attachment screw. SOLUTION: The heat dissipation member 1 has such a structure that the ceramic member 1b is bonded to at least one face of the heatsink 1a formed of metal or the like, and has one or more screwed portions 2 in the form of a hole or notch. A cross section in the screw insertion direction of the screwed portions 2 is a stepped profile with the heatsink 1a protruding to the center of the screwed portion 2 while the ceramic member 1b relatively retreating outside of the screwed portion 2. Due to this structure, even if the attachment screw 4 inserted into the screwed portion 2 is caught in the heatsink 1a, it is hardly caught in the screwed portion 2 of the ceramic member 1b, remarkably reducing the probability of the breaking of the ceramic member 1b and hence increasing the reliability of the heat dissipation member 1. COPYRIGHT: (C)2005,JPO&NCIPI
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